"use client";

import { useState } from "react";
import { Button } from "@/components/ui/button";
import { Input } from "@/components/ui/input";
import { Badge } from "@/components/ui/badge";
import { Heart, Coffee, Pizza, Loader2, Copy, Check } from "lucide-react";
import {
  Dialog,
  DialogContent,
  DialogHeader,
  DialogTitle,
} from "@/components/ui/dialog";
import QRCode from "react-qr-code";
import { DonationTier, DonationResponse } from "@/types/donation";

interface DonationCardProps extends DonationTier {}

export function DonationCard({
  amount,
  title,
  description,
  icon,
  badge,
  highlighted,
}: DonationCardProps) {
  const [customAmount, setCustomAmount] = useState(amount || 10);
  const [loading, setLoading] = useState(false);
  const [showPixModal, setShowPixModal] = useState(false);
  const [pixData, setPixData] = useState<{
    code: string;
    qrCode: string;
  } | null>(null);
  const [copied, setCopied] = useState(false);

  const icons = {
    coffee: Coffee,
    pizza: Pizza,
    heart: Heart,
  };

  const Icon = icons[icon];

  const handleDonate = async () => {
    setLoading(true);
    try {
      const response = await fetch("/api/donations/create", {
        method: "POST",
        headers: { "Content-Type": "application/json" },
        body: JSON.stringify({ amount: customAmount }),
      });

      const data: DonationResponse = await response.json();

      if (data.success && data.paymentUrl) {
        // Redirecionar para página de pagamento do AbacatePay
        window.location.href = data.paymentUrl;
      } else if (data.success && data.pixCode && data.pixQrCode) {
        // Fallback: mostrar modal com QR Code se disponível
        setPixData({
          code: data.pixCode,
          qrCode: data.pixQrCode,
        });
        setShowPixModal(true);
      } else {
        console.error("Erro ao criar doação:", data.error);
        alert("Erro ao processar doação. Tente novamente.");
      }
    } catch (error) {
      console.error("Donation error:", error);
      alert("Erro ao processar doação. Tente novamente.");
    } finally {
      setLoading(false);
    }
  };

  const handleCopyPixCode = async () => {
    if (pixData?.code) {
      try {
        await navigator.clipboard.writeText(pixData.code);
        setCopied(true);
        setTimeout(() => setCopied(false), 2000);
      } catch (error) {
        console.error("Erro ao copiar código PIX:", error);
      }
    }
  };

  return (
    <>
      <div
        className={`
          relative p-8 rounded-2xl border bg-card backdrop-blur-lg 
          hover:scale-105 transition-all duration-300
          ${
            highlighted
              ? "border-primary/50 shadow-[0_0_30px_rgba(34,197,94,0.3)]"
              : "border-border/50"
          }
        `}
      >
        {badge && (
          <Badge className="absolute -top-3 left-1/2 -translate-x-1/2 bg-primary">
            {badge}
          </Badge>
        )}

        <div className="flex flex-col items-center text-center space-y-4">
          <div className="p-4 rounded-full bg-muted/50 border border-border/30">
            <Icon className="w-12 h-12 text-primary" />
          </div>

          <h3 className="text-2xl font-bold">{title}</h3>
          <p className="text-muted-foreground">{description}</p>

          {amount ? (
            <div className="text-4xl font-bold text-primary">
              R$ {amount.toFixed(2)}
            </div>
          ) : (
            <Input
              type="number"
              value={customAmount}
              onChange={(e) => setCustomAmount(Number(e.target.value))}
              min={5}
              max={10000}
              step={5}
              className="text-center text-2xl font-bold"
              placeholder="R$ 10,00"
            />
          )}

          <Button
            size="lg"
            className="w-full"
            onClick={handleDonate}
            disabled={loading}
          >
            {loading ? (
              <>
                <Loader2 className="mr-2 h-5 w-5 animate-spin" />
                Processando...
              </>
            ) : (
              "Apoiar com PIX"
            )}
          </Button>
        </div>
      </div>

      <Dialog open={showPixModal} onOpenChange={setShowPixModal}>
        <DialogContent className="max-w-md">
          <DialogHeader>
            <DialogTitle className="text-center">
              Escaneie o QR Code para Pagar
            </DialogTitle>
          </DialogHeader>

          {pixData && (
            <div className="space-y-4">
              <div className="flex justify-center p-4 bg-white rounded-lg">
                <QRCode value={pixData.qrCode} size={256} />
              </div>

              <div className="space-y-2">
                <p className="text-sm text-muted-foreground text-center">
                  Ou copie o código PIX:
                </p>
                <div className="flex gap-2">
                  <Input
                    value={pixData.code}
                    readOnly
                    className="font-mono text-sm"
                  />
                  <Button
                    onClick={handleCopyPixCode}
                    variant="outline"
                    size="sm"
                  >
                    {copied ? (
                      <>
                        <Check className="h-4 w-4" />
                        Copiado!
                      </>
                    ) : (
                      <>
                        <Copy className="h-4 w-4" />
                        Copiar
                      </>
                    )}
                  </Button>
                </div>
              </div>

              <p className="text-xs text-center text-muted-foreground">
                O pagamento expira em 30 minutos
              </p>

              <div className="flex gap-2">
                <Button
                  onClick={() => setShowPixModal(false)}
                  variant="outline"
                  className="flex-1"
                >
                  Fechar
                </Button>
                <Button
                  onClick={() => (window.location.href = "/apoiar/obrigado")}
                  className="flex-1"
                >
                  Já Paguei
                </Button>
              </div>
            </div>
          )}
        </DialogContent>
      </Dialog>
    </>
  );
}